公开(公告)号：US20240348007A1

公开(公告)日：2024-10-17

申请号：US18628180

申请日：2024-04-05

申请人： nLIGHT, Inc.

发明人： Kenneth V. ALMONTE

IPC分类号： H01S5/026 ,  H01S5/02251

CPC分类号： H01S5/0264 ,  H01S5/02251

摘要： A fiber laser system monitor includes a fiber laser adapted to generate fiber laser light, a first light emitter adapted to generate first emitted light, a photodiode adapted to receive the first emitted light and the fiber laser light and to generate a received light signal responsive thereto, and a controller connected to the fiber laser, the first light emitter, and the photodiode. The controller receives the received light signal. The controller is configured to determine an acceptable operation for the fiber laser, the first light emitter, and the photodiode by comparing the received light signal with a predetermined maximum threshold and with a predetermined minimum threshold.

公开(公告)号：US11886052B2

公开(公告)日：2024-01-30

申请号：US16921531

申请日：2020-07-06

申请人： nLIGHT, Inc.

发明人： Dahv A. V. Kliner ,  Roger Farrow

IPC分类号： G02F1/01 ,  G02B6/036 ,  G02B6/14 ,  B23K26/064 ,  B23K26/073 ,  G02B27/09 ,  B23K26/067 ,  B23K26/38 ,  B23K26/21 ,  B22F3/11 ,  B22F3/24 ,  B23K26/03 ,  G02B6/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B29C48/08 ,  G02B6/42 ,  B23K26/062 ,  B23K26/70 ,  B29C64/264 ,  B29C64/153 ,  H01S5/00 ,  B22F10/20 ,  B22F10/31 ,  B22F10/36 ,  G02B6/255 ,  G02B26/10 ,  G02B6/028 ,  G02F1/015 ,  B22F12/44 ,  B22F12/49 ,  G02B6/26 ,  G02B6/12

CPC分类号： G02F1/0115 ,  B22F3/1109 ,  B22F3/24 ,  B22F10/20 ,  B22F10/31 ,  B22F10/36 ,  B23K26/032 ,  B23K26/034 ,  B23K26/0342 ,  B23K26/062 ,  B23K26/064 ,  B23K26/067 ,  B23K26/073 ,  B23K26/21 ,  B23K26/342 ,  B23K26/38 ,  B23K26/704 ,  B29C48/08 ,  B29C64/153 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G02B6/02 ,  G02B6/021 ,  G02B6/023 ,  G02B6/02042 ,  G02B6/02347 ,  G02B6/02371 ,  G02B6/02395 ,  G02B6/036 ,  G02B6/03611 ,  G02B6/03694 ,  G02B6/14 ,  G02B6/255 ,  G02B6/4203 ,  G02B6/4206 ,  G02B27/0927 ,  G02B27/0933 ,  G02B27/0994 ,  H01S5/0085 ,  B22F12/44 ,  B22F12/49 ,  G02B6/02004 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/0365 ,  G02B6/03616 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/03688 ,  G02B6/262 ,  G02B6/4296 ,  G02B26/101 ,  G02B2006/12121 ,  G02F1/0151

摘要： Disclosed herein are methods, apparatus, and systems for providing an optical beam delivery system, comprising an optical fiber including a first length of fiber comprising a first RIP formed to enable, at least in part, modification of one or more beam characteristics of an optical beam by a perturbation assembly arranged to modify the one or more beam characteristics, the perturbation assembly coupled to the first length of fiber or integral with the first length of fiber, or a combination thereof and a second length of fiber coupled to the first length of fiber and having a second RIP formed to preserve at least a portion of the one or more beam characteristics of the optical beam modified by the perturbation assembly within one or more first confinement regions. The optical beam delivery system may include an optical system coupled to the second length of fiber including one or more free-space optics configured to receive and transmit an optical beam comprising the modified one or more beam characteristics.

公开(公告)号：US11831121B2

公开(公告)日：2023-11-28

申请号：US17788677

申请日：2021-01-28

申请人： NLIGHT, INC.

发明人： Juan Carlos Lugo ,  Teemu Kokki ,  Roger Farrow ,  Dahv A. V. Kliner

IPC分类号： G02B6/255 ,  H01S3/067 ,  H01S3/00

CPC分类号： H01S3/0064 ,  H01S3/06704

摘要： Some embodiments may include a fiber laser including two or more input fibers and an output fiber to deliver a beam to a workpiece, the fiber laser comprising. The fiber laser may include a combiner having ends and a length, wherein the combiner is arranged to release, from its length, a portion of back-reflected light received from the output fiber at an output end of the ends from the combiner, the combiner including: a capillary tube to enclose part of the two or more input fibers at an input end of the ends of the combiner, the capillary tube having ends and a length located between the ends of the capillary tube; and a cladding light stripper (CLS) defined by part of the length of the capillary tube, wherein the CLS provides the release of the portion of the back-reflected light. Other embodiments may be disclosed and/or claimed.

公开(公告)号：US20230359051A1

公开(公告)日：2023-11-09

申请号：US17777248

申请日：2020-11-19

申请人： NLIGHT, INC

发明人： Jay SMALL ,  Shuang LI ,  Dahv A.V. KLINER

IPC分类号： G02B27/09 ,  G02B6/028 ,  G02B6/42 ,  C03B37/027

CPC分类号： G02B27/0994 ,  C03B37/02745 ,  G02B6/0286 ,  G02B6/4206 ,  C03B2203/26

摘要： Angularly homogenizing gradient index optical fiber having a refractive index profile that is non-quadratic to a degree sufficient to enhance precession of light as it is propagated through the fiber. Deviation from the quadratic may be limited to avoid profoundly changing the radial boundary within the fiber. Beam asymmetry, for example, associated with small aperture sources launched into a fiber off axis, may be made more symmetric as the beam is propagated through the homogenizing gradient index optical fiber. A refractive index profile may be manufactured to avoid a pure quadratic profile, or a fiber having a refractive index profile that is quadratic in only some orientations about the fiber axis may be twisted during draw to induce a refractive index profile path that enhances propagation precession.

公开(公告)号：US20230273391A1

公开(公告)日：2023-08-31

申请号：US18016098

申请日：2021-07-12

申请人： nLIGHT, INC.

发明人： David Martin Hemenway ,  Wolfram URBANEK ,  Kevin Fortier ,  David C. DAWSON ,  Eric Martin

IPC分类号： G02B7/00

CPC分类号： G02B7/00 ,  H01S3/067

摘要： An optical component has a bottom part located in an opening defined by a surface, wherein a distance between a sidewall of the bottom part of the optical component and a sidewall of the opening is non-uniform in which a width of a first section of the opening or a first section of the bottom part of the optical component is narrower than a width of a second lower section of the opening or a width of a second lower section of the bottom part of the optical component; and an adhesive is located in the opening between sidewalls.

公开(公告)号：US20230258869A1

公开(公告)日：2023-08-17

申请号：US18016067

申请日：2021-07-14

申请人： nLIGHT, INC.

发明人： Juan Carlos Lugo

IPC分类号： G02B6/255 ,  G02B6/28 ,  H01S3/067

CPC分类号： G02B6/2558 ,  G02B6/2808 ,  G02B6/2856 ,  H01S3/06704 ,  H01S3/06745

摘要： A capillary combiner housing for an optical fiber combiner has an inner combiner casing supporting optical fibers. The capillary combiner housing includes a non-metallic body defining a lumen between an input side and an output side, the lumen sized to receive the inner combiner casing, the non-metallic body having a coefficient of thermal expansion substantially matching that of the inner combiner casing. Also included is a first aperture in the input side, the first aperture having a first inside diameter sized to receive multiple input optical fibers, and a second aperture in the output side, the second aperture having a second inside diameter sized to receive an output fiber.

公开(公告)号：US20230258868A1

公开(公告)日：2023-08-17

申请号：US18015945

申请日：2021-07-13

申请人： nLIGHT, Inc.

发明人： Kevin Michael Carbone

IPC分类号： G02B6/245 ,  G02B6/25 ,  H01S3/067

CPC分类号： G02B6/245 ,  G02B6/25 ,  H01S3/06733 ,  H01S3/06745

摘要： A mounting surface defines a branching channel, the branching channel having a main channel and one or more sub-channels branching off the main channel. An optic fiber is affixed to the mounting surface, the optic fiber including a cladding layer and an interior surrounded by the cladding layer, wherein part of the optic fiber is suspended over the main channel. A clad light stripper includes one or more discontinuities in an outer surface of the cladding layer of a suspended section of the optic fiber, the one or more outer surface discontinuities to release a portion of the process light. The one or more subchannels include a first sub-channel having an ingress located to capture released light from an individual one of the one or more discontinuities and trap at least a portion thereof.

公开(公告)号：US20230011712A1

公开(公告)日：2023-01-12

申请号：US17842097

申请日：2022-06-16

申请人： NLIGHT, INC.

发明人： Kenneth V. ALMONTE ,  Aaron Brown

IPC分类号： H01S3/00 ,  G02B7/182

摘要： A magnetically-actuated laser beam control assembly may include a magnetically permeable cover arranged to sealingly couple to an optics housing to cover an opening of the optics housing, an interior sub-assembly, and an exterior sub-assembly. The interior sub-assembly may include includes a linkage having a first section and a second section; the first section of the linkage to receive an optical component; and a ferroelectric or ferromagnetic material on the second section of the linkage. The exterior sub-assembly may include an electromagnet energizable to impart a magnetic force to the ferroelectric or ferromagnetic material to move the optical component from one of a resting position and a different position to the other of the resting position and the different position to cause the optical component to selectively optically process a laser beam. Other embodiments may be disclosed and/or claimed.

公开(公告)号：US20220368108A1

公开(公告)日：2022-11-17

申请号：US17761188

申请日：2020-09-15

申请人： NLIGHT, INC.

发明人： Zhigang Chen ,  Manoj Kanskar

IPC分类号： H01S5/20 ,  H01S5/32 ,  H01S5/34

摘要： Some embodiments may include a laser diode having a strain-engineered cladding layer for optimized active region strain and improved laser diode performance. In one embodiment, the laser diode may include a semiconductor substrate having a material composition with a first lattice constant; and a plurality of epitaxy layers form on the semiconductor substrate, with plurality of epitaxy layers including a waveguide layer and cladding layers, wherein the waveguide layer includes an active region having a material composition associated with a target optical wavelength, wherein a second lattice constant of the material composition of the active region is different than the first lattice constant; wherein a material composition and/or thickness of an individual cladding layer of the cladding layers is/are arranged to impart a target stress field on the active region to optimize active region strain. Other embodiments may be disclosed and/or claimed.

公开(公告)号：US20220352694A1

公开(公告)日：2022-11-03

申请号：US17761466

申请日：2020-09-10

申请人： NLIGHT. INC.

发明人： Jiamin ZHANG ,  Shuang Li ,  Manoj Kanskar

IPC分类号： H01S5/40 ,  H01S5/02251 ,  H01S5/14 ,  G02B6/42

摘要： Some embodiments may include a packaged laser diode assembly, comprising: a length of optical fiber having a core and a cladding layer, the length of optical fiber having a first section and a second section, the first section of the length of optical fiber including a tip of an input end of the optical fiber; one or more laser diodes to generate laser light; one or more optical components to direct a beam derived from the laser light into the input end of the length of optical fiber; a clad light stripper on the second section of the length of optical fiber; wherein, in the first section of the length of optical fiber, the cladding layer includes: a light scattering feature at the tip of the input end of the optical fiber and/or a void along a length of the optical fiber.